Please leave your name, number, and a brief message after the tone

When you call my office I have some rules for you.

1. Speak clearly and loud enough to be heard
2. Don't be mean. It's not my fault that the person you need to speak with is on the other line or out of the office. And it's not my fault that you don't like them.
3. Leave your name (spell it if it's unusual) and number.
4. Leave a brief message. Don't give me a thousand details to relay to them, because I probably won't be able to write it all down in time.